Controller for electrical apparatus.



No. 683,709. Patented not. l, |901.

a. w. scHlLLlNG. CONTROLLER FDR ELECTRICAL APPARATUS.

, (Application led May 16, 1901) 4 2 Sheets-Sheet I.

(No Model.)

r f f WWW/ N A 1101683309. Patemed 0111.1,.1901.

EL SCH'ILLING.

CUNTROLLERi FHF? ELECTRICAL APPARATUS.

@pgn-mmm man1 my 16, 1901.)

` 2 Sheets'-Sheet 2.

I (No Model.)

.UNITE STATES.

PATENT OFFICE..

GEORGEW, SCHILLING, OF PHILADELPHIA, PENNSYLVANIA.

CONTROLLER FOR ELECTRICAL APPARATUS. i

SPECIFICATION forming part of Letters Patent No. 683,709, dated October1, 1901.

Application inea May 1e, 1901. serial no. 60.471. cro model.)

To CLZZ whom, it may concern:

Be it known that I, GEORGE W. SCHILLING, a citizen of the United States,residing in the city and county of Philadelphia,State of Pennsylvania,have invented a new and useful Improvement in Controllers for ElectricalApparatus, of which the following is a specificati'on.

My invention consists of means applied to electrical apparatus forpreventing the operator thereof from too rapidly applying the current orvoltage.

Figure 1 represents a top or plan view of a controller embodying myinvention. Fig. 2 represents a vertical section thereof on line a: Qc,Fig. 1. Fig. 3 represents a horizontal section on line y y, Fig. 2. Fig.4 represents a vertical section of a portion on line .e z, Fig. l. Fig.5 represents a top or plan view of a modification. Fig. 6 represents avertical section of a portion on line a ct, Fig. 5.

Similar letters of reference indicate corresponding parts in thefigures. Y

Referring to the drawings, A designates the cap or lid of the casing ofan electrical controller, rising from the base B of which are theconcentric anges C, forming the annular channel D. E designatesshoulders which project inwardlyfrom the inner faces of said flanges Cand alternate one with the other, forming a circuitous or zigzag passagein said channel.

F designates the lever or handle of the controller, the same consistingof separable parts F F2, which are fitted to each other telescopically,whereby the section F may be pushed in or drawn out on said section F2.

G designates a plunger whose stem H is movably iitted in the inner endof the section F of the lever, said stem extending in a verticaldirection and being pressed downwardly by the spring .I within the boxor guide K, which contains said stem H.

The upper faces of the shoulders E are inclined or slanted, as at L, andthe sides of said shoulders are right-lined, as at M. It will nowbe seenthat when the current is to be turned on, the lever,which is at rest atthe no-load point, is moved, say, to the right. Then the plunger G meetsan obstacle in the shoulder, which intercepts its path of motion.Therefore in order to pass the same the handle-scction of the lever ismoved in so as to clear said shoulder, and the motion is continned whenthe adjacent shoulder presents a further,A obstacle, in which case thehandlesection is drawn out, and so on, by which means the current may beregulated to the extent required, and provision is also made forpreventing the lever from being abruptly moved to the full current orvoltage point N. In order to reduce the current, the lever is returnedin the direction of its startingpoint, when the plunger may ride overthe inclined faces of the shoulders, said plunger readily yielding anddropping after it has passed a shoulder, owing to the action of thespring J. It is evident that the lever may be moved in the oppositedirection for reversing the current.

The invention as thus far described is applicable to electricalmachinery or apparatus that requires to be controlled by rheostatic` ormultivoltage or other suitable method, but is also applicable tomechanical devices that require a slow movement on, but a quick movementoff, or both.

In Fig. 5 I show substantially the saine construction of parts, with theexception of a slightly-different arrangement of the course of thechannel D and the location ofthe plunger Gin the knob or handle G2 ofthe lever F3, the plunger in this case having also its under sideslanted or inclined, as at G3, so as to more readily ride over theshoulders E2 in the channel D. In said channel D is a shoulder N', thesame forming an obstruction adjacent to the lever F3 in the normalposition'of the latter, the side P of said shoulder being perpendicularto the base of tle channel D', while the upper face Q of said shoulderis inclined or slanted, thus permitting the plunger G5 to ride over thesame on the return motion thereof. It will be noticed that the side R ofsaid plunger is also perpendicular to the base of said channel, wherebywhen said 'side strikes the side P motion of the lever, and consequentlyof the plunger, in the Wrong direction is prevented, the right directionbeing indicated by the arrow, Fig. 5.

As shown in Fig. 2, the plunger for a twoway or reversible controllerhas its opposite sides perpendicular to the base of the channel D; butin the one-way controller, Figs. 5

yand G, the under side of the plunger is inclined or slanted forconveniently riding over the inclined or slanted faces of the shouldersE2 N.

In the controller shown in Figs. 5 and 6 the plunger is formed,preferably, of steel, and an electromagnet S is connected with the cap Aat the full current or voltage point N. In this case When the current ison said magnet attracts the plunger and holds it in position. When,however, the current is off, the magnet releases its attractive force onthe plunger and allows the latter to drop to the no-load point ofcontrol.

Having thus described my invention, what I claim as new,and desire tosecure by Letters Patent, is-

1. In a controller of the character stated, a channel in a memberthereof, and a risingand-falling traveler carried by the lever or handlethereof, entering said channel, said traveler extending from said leverparallel with the shaft of the controller.

2. In a controller for an electrical appara tus, a channel in the memberthereof, shoulders in said channel forming a circuitous passage, and aplunger which is adapted to intermittently traverse said passage, saidshoulders having right-lined sides forming obstructions to the motion ofsaid plunger in one direction and having inclined upper faces on whichsaid plunger is adapted to ride freely, permitting the rapid return ofsaid lever.

3. In a controller for an electrical apparatus, means for preventingrapid application of the current or voltage, consisting of a cir-'cuitous passage in the casing of said apparaessence passage, saidpassage being formed of separated shoulders with sides formingobstructions to said plunger in the forward motion of the plunger.

4. In a controller of the character stated, a casing, a lever, acircuitous channel in said casing, and a plunger adapted to follow thecourse of said channel,said lever being formed of sections, one of whichis slidable on the other section and carries said plunger, said plungerbeing adapted to rise and fall on the sliding section that carries it.

V5. In a .controller for an electrical apparatus, a circuitous channelina member thereof, and a plunger having a side perpendicular to the baseof said channel, and an inclined or slanted base.

6. In a controller for an electrical apparatus, a circuitous channel ina member thereof, a plunger adapted to traverse said channel, and anobstruction in said channel for preventing an improper motion of saidplunger, said channel having therein, shoulders adapted to form stops atintervals for said plunger in its advance motion, and being furtheradapted to allow the rapid return motion of said plunger Withoutinterference of said stops.

7. In a controller of the character stated having a circuitous passage,a lever provided l with a sliding member, a pin or plunger which ismovable perpendicularly to said member and adapted to intermittentlytraverse said channel.

GEORGE XV. SCI-IILLING.

Witnesses:

JOHN A. WIEDERSHEIM, DAVID R. KNAPP.

